From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-alma10-1.taild15c8.ts.net [100.103.45.18]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 500E72DFA4A; Sun, 21 Jun 2026 15:57:45 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=100.103.45.18 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1782057468; cv=none; b=YMUPjRFx9l3MpSAYxESrsqXud2KcR/w30MtMUYLkR1Y/2ZEROrhrETQ9YDDBGWMTBCgHaqaMwdQqHtMVNPd0DWaU56ZrWYFY70yo+uwi1nTd/B3CIncuQbgEGOv3cgXOEhx08Xp1ExxFvQ7fqAEaqKJxE08dNtsf505LDJc1G6U= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1782057468; c=relaxed/simple; bh=7ja7d4c4JvmVfIcI30Xst4gQ11HDWLV4AIqpnCw/FLk=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=sOYZWQWMXX5kGeTHNFq0EwJ3nUCs3e5+0iJLLvExNjxu3owqumQw7bFgHWJBsrdakermM4Y3VYWiO5MuUY2rNoLbzTEv8LfGDNOoCmuUJiw0dVPN3LJT9xontsmc+q9SfZ5f852oCsIDvhmZ8HnST5izloBgN7dKlTUdnqeVlMc= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=edHHNkAl; arc=none smtp.client-ip=100.103.45.18 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b="edHHNkAl" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 82C021F00A3D; Sun, 21 Jun 2026 15:57:44 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=kernel.org; s=k20260515; t=1782057465; bh=azqsIyPcBSXEM0jexqRTWeoPRmDH/XuigFj32Ye/QlY=; h=From:To:Cc:Subject:Date:In-Reply-To:References; b=edHHNkAlFNSvSaPLtTiXE7cecwcR4T2dh7V8JGEnT9YrHTRXcVklh362/8j99fclX ddEyALknb/I7emPxDA3QomMcJIZuzI85Eg2uCGCYHNsXy7JmL/guNFnz+IUOBnzrgo CKGm7MtgbxtgUc8/QAIfao9HtfsOATQXkIZEzKZeCqTjf6FxAkixRFXisWm1do5ya1 F1kgmG2pGuyx7SJnB5dW4IYzlOERZYly61Ag0xjUWzIvg6RUr3VOu24okIr1F5Z/9c 6dKV/j6MQNet8YNlniDbPWy3xRnSpW5N7nieA/7B7DGDApyLnTmGDFzu3nRp69KaF6 +4yxILtuEzInw== From: SeongJae Park To: Cc: SeongJae Park , Andrew Morton , damon@lists.linux.dev, linux-kernel@vger.kernel.org, linux-mm@kvack.org Subject: [RFC PATCH v1.2 17/17] mm/damon: remove damon_region->nr_accesses_bp Date: Sun, 21 Jun 2026 08:57:13 -0700 Message-ID: <20260621155715.87932-18-sj@kernel.org> X-Mailer: git-send-email 2.47.3 In-Reply-To: <20260621155715.87932-1-sj@kernel.org> References: <20260621155715.87932-1-sj@kernel.org> Precedence: bulk X-Mailing-List: damon@lists.linux.dev List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit No code touches damon_region->nr_accesses_bp field. Remove it. Signed-off-by: SeongJae Park --- include/linux/damon.h | 10 ---------- mm/damon/core.c | 3 +-- 2 files changed, 1 insertion(+), 12 deletions(-) diff --git a/include/linux/damon.h b/include/linux/damon.h index a09ee8a09b5af..fc3d467dc2e34 100644 --- a/include/linux/damon.h +++ b/include/linux/damon.h @@ -47,8 +47,6 @@ struct damon_size_range { * @ar: The address range of the region. * @sampling_addr: Address of the sample for the next access check. * @nr_accesses: Access frequency of this region. - * @nr_accesses_bp: @nr_accesses in basis point (0.01%) that updated for - * each sampling interval. * @probe_hits: Number of probe-positive region samples. * @list: List head for siblings. * @age: Age of this region. @@ -61,13 +59,6 @@ struct damon_size_range { * not be done with direct access but with the helper function, * damon_update_region_access_rate(). * - * @nr_accesses_bp is another representation of @nr_accesses in basis point - * (1 in 10,000) that updated for every &damon_attrs->sample_interval in a - * manner similar to moving sum. By the algorithm, this value becomes - * @nr_accesses * 10000 for every &struct damon_attrs->aggr_interval. This can - * be used when the aggregation interval is too huge and therefore cannot wait - * for it before getting the access monitoring results. - * * @age is initially zero, increased for each aggregation interval, and reset * to zero again if the access frequency is significantly changed. If two * regions are merged into a new region, both @nr_accesses and @age of the new @@ -77,7 +68,6 @@ struct damon_region { struct damon_addr_range ar; unsigned long sampling_addr; unsigned int nr_accesses; - unsigned int nr_accesses_bp; unsigned char probe_hits[DAMON_MAX_PROBES]; struct list_head list; diff --git a/mm/damon/core.c b/mm/damon/core.c index 6542ebf13d4d8..8d3b720f774f6 100644 --- a/mm/damon/core.c +++ b/mm/damon/core.c @@ -3584,8 +3584,7 @@ static int kdamond_fn(void *data) * aggregation, and make aggregation * information reset for all regions. Then, * following kdamond_reset_aggregated() call - * will make the region information invalid, - * particularly for ->nr_accesses_bp. + * will make the region information invalid. * * Reset ->next_aggregation_sis to avoid that. * It will anyway correctly updated after this -- 2.47.3